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| author | Dave Liu <daveliu@freescale.com> | 2009-06-10 22:53:37 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2009-06-23 01:54:27 -0400 |
| commit | dc77ad4c8727d3a1c23eadcb287501dab480d634 (patch) | |
| tree | 6fee52f064bca281a80612d9627a96bed3ba61d8 /drivers/ata/sata_fsl.c | |
| parent | 918d7b7c330f8afe18cb1b8692fc5f45a798634e (diff) | |
| download | kernel_samsung_smdk4412-dc77ad4c8727d3a1c23eadcb287501dab480d634.zip kernel_samsung_smdk4412-dc77ad4c8727d3a1c23eadcb287501dab480d634.tar.gz kernel_samsung_smdk4412-dc77ad4c8727d3a1c23eadcb287501dab480d634.tar.bz2 | |
sata_fsl: Add power mgmt support
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Liu Yu <yu.liu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/sata_fsl.c')
| -rw-r--r-- | drivers/ata/sata_fsl.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c index 36b8629..94eaa43 100644 --- a/drivers/ata/sata_fsl.c +++ b/drivers/ata/sata_fsl.c @@ -1378,6 +1378,37 @@ static int sata_fsl_remove(struct of_device *ofdev) return 0; } +#ifdef CONFIG_PM +static int sata_fsl_suspend(struct of_device *op, pm_message_t state) +{ + struct ata_host *host = dev_get_drvdata(&op->dev); + return ata_host_suspend(host, state); +} + +static int sata_fsl_resume(struct of_device *op) +{ + struct ata_host *host = dev_get_drvdata(&op->dev); + struct sata_fsl_host_priv *host_priv = host->private_data; + int ret; + void __iomem *hcr_base = host_priv->hcr_base; + struct ata_port *ap = host->ports[0]; + struct sata_fsl_port_priv *pp = ap->private_data; + + ret = sata_fsl_init_controller(host); + if (ret) { + dev_printk(KERN_ERR, &op->dev, + "Error initialize hardware\n"); + return ret; + } + + /* Recovery the CHBA register in host controller cmd register set */ + iowrite32(pp->cmdslot_paddr & 0xffffffff, hcr_base + CHBA); + + ata_host_resume(host); + return 0; +} +#endif + static struct of_device_id fsl_sata_match[] = { { .compatible = "fsl,pq-sata", @@ -1392,6 +1423,10 @@ static struct of_platform_driver fsl_sata_driver = { .match_table = fsl_sata_match, .probe = sata_fsl_probe, .remove = sata_fsl_remove, +#ifdef CONFIG_PM + .suspend = sata_fsl_suspend, + .resume = sata_fsl_resume, +#endif }; static int __init sata_fsl_init(void) |